Ludwig wurzburg



Patented'Apr. 1,9, 189s.

Hlllliillllllllll 51 Page.

(No Model.)

L. WRZBURG. JAR 0B. OTHER RECEPTAGLE FOB PRBSERVES, ne. No. 602,791.

' `With said jar or receptacle.

UNITED STATES E" "t t i PATENT EErcE.

LUDWIG WRZBURG, OF LONDON, ENGLAND.

SPECIFICATION forming part of Letters Patent No. 602,791, dated April 19, 1898.

Application filed May 29, 1897. Serial No. 638,764. (No model.)

To @ZZ whom t riz/ay cori/cern:

Be it known that I, LUDWIG wWRZBURG, merchant, a subject of the Queen of England, and a resident of 4c Fenchurch Buildings, in the city of London, England, have invented new and useful Improvements in and Relating to Jars or other Receptacles for Preserves and the Like, of which the following is a speciiication.

My invention relates to jars or other receptacles for preserves and the like which are so made that they may be handled with facility, packed closely together in a case or box, and from which the preserves or other contents can be readily removed Without breaking or destroying the entirety thereof. This latter feature is a decided advantage, especially when the jar is used for containing ox-ton gue, lobster, or other flesh or fish meats or substances usually incased in a gelatinous envelop. By filling such substances in to jars of the kind forming the suject of this invention the contents can be turned out Whole ready for the table. A further advantageresulting from-the use of jars or receptacles made according to my invention is that when emptyr and if so desired the jar or receptacle may be used as a drinking vessel or for other suitable purposes.

My invention furthermore relates to the airtight closing of the jars or receptacles after sterilization of the contents in such a way that the cover or lid can be removed quickly and without damaging or breaking it or any other part. By this invention, therefore, glass or other brittle material may be advantageously used for the manufacture of the jars or receptacles and the covers or lids for same; but any other material of suitable rigidity may be used.

In the accompanying drawings, Figure lis a vertical section through a jar or receptacle made according to this invention, and Fig. 2 is a similar view of the cover or lid for use Fig. 3 is an inverted plan of the cover or lid. Fig. e is a sectional elevation of a portion of the jar and the cover, showing the same air-tightly closed thereon; and Fig. 5 is an elevation of the jar and cover and the closingespring used therewith during the process of sterilization.

The same letters of reference, where they occur, are used to denote the same or correspending parts in all the figures.

According to this invention tbe jar or receptacle A, as shown in Fig. l, is made of a uniform internal and external diameter from top to bottom and smooth inside and outside and with a suitable base on Which it may be stood upright. The cover or lid B, Figs. 2 and 3, is made in the form of a disk of such size as to be hush all round with the exterior Walls a of the jar or receptacle A when laid thereon. (See Figs. Lland 5.) This disk cover or lid B is dat on the top surface and on the under surface is provided with a perpendicular Wall or downwardly-projecting flange b, which extends almost completely round the disk, one part being interrupted or formed With a gate or Way b'. The cover or lid is preferably provided with an external notch or other device to indicate the position of the gate or way b. The flange l) is situated at such a position on the disk cover or lid B as to lie inside the exterior Walls a of the jar or receptacle A when laid thereon, leaving a small annular space a' (see Figs. 4 and 5) between said flange b and the Walls o, so as just to allow room for the expansion of the contiguous parts of the glass or other material during the sterilization process. A rubber packing-ring C, of an ysuitable sectiomwhich is just large enough to lie without being stretched on the outside of the flange Z1 on the cover'or lid B, is placed around and outside the said iiange b and forms a packing between the lower surface h2 of the cover or lid B outside the llian ge and the flat top surface a2 of the exterior Walls a of the jar or receptacle A.

During the process of sterilization of the contents the cover or lid B is held on by a spring-fastening, such as is shown at D in Fig. 5, pressing on the top of the cover or lid and taking under the base of the jar or receptacle A. This spring acts in the usual manner, the cover being slightly raised against the pressure of said spring under the action of the steam produced in the sterilization process, allowing the steam to escape from the interior of the jar. VVhc-n the sterilization is completed, this springfastening IOO D may be removed, the cover being vheld closed on the jar by the external atmospheric pressure thereon, the elastic packing-ring C forming a perfectly air-tight joint between the jar and its cover.

To open the jar, the rubber packing C is pressed inward, by the edge of a coin or other suitable device, through the gate or way b in the iange b on the under surface of the disk cover B, thus allowin g air to enter the interior of the jar through such gate or way b", thereby destroying the partial vacuum inside the receptacle, whereupon the lid or cover can be lifted oit.

It will be obvious that several modifications may be made in the cover without departing from the nature of the' invention. For example, the cover need not necessarily be made iiush with the outer walls of the jar or receptacle. The downward iiange b may have more i than one interruption, if desired, and it may i be inclined instead of being at right angles to z the under surface of the cover, and the cover l itself may be made of any suitable con-torination other than a fiat disk form; With a ii'atg top cover, however, such as is shown in Figs.

closely together in a case or box.

th'eruiore be obvious that the cover and the method of closure hereinbe fore described may l be applied to receptacles having tapering bottie-necks.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In combination with a receptacle, a cap having an annularl downward iiange, tting within the top of the same, and a compressible gasket interposed between the said parts, the said flange having a gate or way, b', extending through the entire Width of the flange and making communication with the interior of the can and the said space, in order that air may be admitted to the interior of the can when the gasket is displaced for the purpose set forth.

2. In combination with a receptacle, a cap having a iiange that extends down into the latter, and a compre'ssibl'e gasket interposed between the under side of the said cap and the upper edge ot the said receptacle, the said flange having a gate or way formed therein which makes communication with the interior of the can, in order that when the gasket is compressed air may be admitted to the interior of the can, substantially as, and for the purpose set forth.

LUDWIG WRZBURG.

lVitiiesses:

H. F. BURTON, M. OTooLE. 

